Ington



(No Model.) 3 She'ets-Sheet 1. J. E. & E. ATWOOD & E. E. BRADLEY.

SHEDDING MECHANISM FOR LOOMS.

,574. Patented Aug. 3, 1886.

N PETERS, Phumumu npher, Washmglon, D. c.

(No Model.) I 3 Sheets--Sheet 2 J. E. & E. ATWOOD & E. E. BRADLEY;

SHEDDING MECHANISM FOR LOOMS. No. 346,574. Patented Aug. 3, 1886.

x i w FE D WZirzease;

N. PETERS, Fholobthngriphen Walhioglon. D. C.

(No Model.) 3 Sheets-Sheet 3. J. E. & E. ATWOOD &: E. E. BRADLEY.

SHEDDING MECHANISM FOR LOOMS.

N. PEIERS. Fhutwlilho n lwr. wuninmon, D. C.

UNITED STATES PATENT Fries.

JOHN E. ATVOOD, EUGENE AT\VOOD, AND EDXVARD E. BRADLEY,.OF STON- INGTON, CONNECTICUT, ASSIGNORS TO THE ATVOOI) MACHINE COM- PANY, OF SAME PLACE.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 346,574, dated August 3, 1886.

Application filed September 10, 1885. Serial No. 17F,O5'2. (No model.)

1 To all whom it may concern: 'A connecting the end standards, and a pro- Be it known that we, JOHN E. ATWOOD, jecting portion, A, which extends horizon- EUGENE ATWOOD, and EDWARD E. BRADLEY, tally from one of the end standards, and is 55 all of Stonington, in the county of New Lonbifurcated or forked to form two arms, as 5 den and State of Connecticut, have invented shown in Fig. 1, so as to form the supports a new and useful Improvement in Shedding for the upper and lower hook-levers, B B. Mechanisms for Looms, of which the following The end standards or uprights are arranged is a specification. with their width transverse to the length of (.0

Our invention relates to the kind of shed the hook-levers B B, and the upper lever, B,

IO ding mechanism whichis commonly known as works in a suitable slot or guide, a, in one a dobby. In such mechanism the hooked end standard or upright, while thelower hooklifting-wires from which the harness is suslever, B, works in a suitable slot, a, in the pended are raised and lowered by means of same end standard or upright. The slots ea 65 levers over which they hook, and the engageform suitable guides to the levers in their ris- I5 ment of the levers with these wires is coning and falling movements. 'The upper and trolled by a series of horizontally-arranged lower levers, B B, are connected by rods or and spring-actuated needles, which are operlinks BHvith opposite ends of the lever B, ated upon by patterncards carried by a perfulcrnmed at I), by which they are made to rise 70 forated cylinder in a swinging or oscillating and fall simultaneously. One lever always frame. descends as the otherone is rising. The levers Ourinventionconsistsin novel combinations receive a regular reciprocating upward and .of parts and details of construction, which are downward movement by means of a rod, B,

hereinafter described, and pointed out in the from the crank 13, which is connnonly secured 75 claims, and by which the construction of the on the main crank-shaft of the loom, such (lobby is simplified, and its cost greatly lesscrank and rod being shown in Fig. 1.

ened. In order to construct the fulcrum-support In the accompanying drawings, Figure 1 is for the levers B B in an inexpensive manner,

a side elevation of a (lobby embodying our we cast upon the arms A integral laterally- 8o invention, the cylinder and its supportingprojecting studs aflwhich taper from the arm frame being removed in order to illustrate outward, as shown in Fig. 2, and we construct more clearly the other parts. Fig. 2 is a secon the end of each of the lovers 1 B a taper tional view illustrating a portion of the main socket or eye,b,which fits the said taper stud. frame and one of the fulcrum-supports which A screw, I), inserted in the end of the taper 8 5 the hook-levers have upon said frame. Fig. stud, secures the socket or eye I) thereon, and

3 is a vertical section upon the plane of the such an arrangement constitutes a very simdotted line a :0, Fig. 1, looking toward the ple fulcrumsupport for the levers. right of Fig. 1. Fig. 4 is a similar section 0 designates the vertically-arranged hooked upon the plane of the dotted line g y, Fig. 1, lifting-wires, which have hooks c engaging 90 also looking toward the right of Fig. 1. Fig. the upper lever, B, and the other hooks, 0,

o 5 is an elevation of the cylinder, cylinderengaging the lower lever, B. The harness of frame, and its operating mechanism, iucludthe loom is to be connected with these liftinging those portions of the main frame which wires in the usual way. support the cylinder-frame; and Fig. 6 is a In the lower stretcher or girt, A, is an 5' horizontal section upon the plane of the dot opening, a, through which the lifting-wires ted line 2 c, Fig. 1. pass clearly, and opposite this opening is a Similar letters of reference designate correplate, a, which is provided with slots for the spending parts in all the figures. reception of the lifting-wires,as shown best in In this dobby the main frame is made, for Fig. 6, and which is made separate from the 100 the sake'of simplicity and cheapness, in one frame, and secured thereto by screws a or integral cast structure. This structure comother means. The slotted plate (0 holds the prises end standards or uprights, A A, upper lifting-wires separate from each otherat proper and lower horizontal girts or stretchers, A distaneesapart, and forms their lower guide.

To the upper girt or stretcher, A, is secured a horizontally-extending bracket, A, which is slotted at a, for the passage of the lifting-wires G, and which forms the upper guide for said wires, and holds them separate from each other.

D designates the horizontal needles, each of which is formed with an eye, (I, to receive a lifting-wire through it, and which are actuated by springs d in a direction to carry the hooks c of the wires Gwithin range of the rising and falling lever B.

In the upper girt or stretcher, A, is formed a large opening, a opposite which is a plate, a", secured in place by screws a", as shown best in Fig. l, or otherwise, and forming a guide to the needles D. The opposite ends of the needles are guided in a plate, a adjustably secured by screws to, or otherwise, to the overhanging side of the bracket A It will be understood that inasmuch as the main frame of the dobby is cast in one integral structure it will be difficult, if not impossible, to properly cast the slots for the passage of the lifting-wires and needles, and this difficulty we overcome by casting in the upper and lower stretchers or girts large openings at a", which are of ample size for all the wires and needles, and we accurately guide the wires and needles by the plates a a, adj ustabl y secured opposite these openings.

The pattern-cards, which are nothere shown, are carried and moved by an ordinary rectan gular cylinder, E, having in it series of perforations c, for the reception of the needles D, and provided with lugs or spurs c, which engage with the cards and move the chain of cards forward as the cylinder is rotated step by step. The cylinder is supported and carried by a cylinder -frame, which comprises vertical arms F F and a cross-bar or stretcher, F. The arms F F have at their lower ends eyes or sockets f, which turn freely upon a tubular shaft, G, supported in bearers a" on the main frame.

g designates a collar, which is secured fast on the tubular shaft G by a set-screw, and which has an arm secured by a screw, 9, to the main frame, as best shown in Fig. 4, and by this collar and screws the tubular shaft G may be held securely in place,both against endwise movement and against turning.

Upon the shaft G are secured collars which are adjustable on the shaft,and are held in place aft-er adjustment by set-screws, (shown in Fig. 5,) and which hold the cylinder-frame from shifting lengthwise of the shaft. The cylinder E has at one end a journal, 0 which fits a eylindric bearing, f, in the arm F, and has at the opposite end a journal, 6*, which fits an open or U-shaped bearing, f in the arm F of the cylinder-frame. The arm F has a lateral opening, 6, through which the journal 0 may be brought under the bearing f and the said bearing f 2 is open at the bottom,and will permit of the lateralinsertion of the journal upward into it. The cylinder-frame carries a sliding rod, f which is fitted to suitaspring, f tending to press it upward. The upper end of the rod f 3 has a broad horizontal surface, j, which bears against the end portion ofthe cylinder and tends to holdit squarely in position when it is swung against the needles D, as will soon be described. The cylinder is turned step by step, as is usual, and the sliding rod f and its head f" constitute a spring-actuated keeper, which tends to limit the turning of the cylinder to a quarter-revolution, and which serves the additional purpose of keeping the journal (fill the Ushaped hearing f The needles D are shown as arranged in two rows, one above another, as best seen in Fig. l, with the needles of each row opposite the spaces between the needles of the other row, in the usual manner. The cylinder E has two rows of perforations or holes, e,-' but the perforations of each are placed only one-half as far apart as are the needles in the row, and therefore constitute two sets of holes, those in one set being alternated between those in the other set. It will therefore be seen that by shifting the cylinder endwise a distance equal to the distance from center to center from the holes 6 the other set of holes will be brought into use.

In order to act in conjunction with the adjustable cylinder, the cards must of course have two sets of perforations, one intermediate to the other in a direction lengthwise of the cylinder, and when so made it is obvious that they may be used to weave two patterns alternately by shifting the cylinder endwise, without the necessity of removing the cylinder and substituting another set of cards.

In order to provide for moving the cylinder endwise, we have represented the journal 6 as provided with a head or flange, 6*, and a lever, E, which is fulcrnmcd at c to the cylinder-frame, and the upper end of which is bifurcated to engage with the head or flange 6*. Through the tubular shaft G extends an inner shaft or red, G, which has at one'end a handle, 9, whereby it may be turned, and which has at the other end a cam, 9 having an oblique rib, g"*, which engages with the lower end of the lever E. At opposite ends jections g, which constitute stops to limit the turning movement of the'cam in both directions. Byturning the inner shaft or red G the lever IE will be actuated and the cylinder of the oblique rib 9 are shoulders or proshifted lengthwise a distance equal to the disbolt at 2', and is also secured by abolt or screw, 2', which passes through a slot, i in the arm, as best shown in Fig. By adjusting the arm by means of the bolt and slot 2" i it may be set so as to definitely fix the limit of movement of the cylinder-frame.

The mechanism for rotating the cylinder step by step is of the usual form and arrangement. A hook or pawl, j, is pivoted atj to the main frame of the machine, and rests upon the end portion of the cylinder. As the cylindeuframe is swung outward, this hook or pawlj engages with the end portion thereof and turns it one quartcr-revolution. The usual means are provided to pull back the cylinder in case any mistake in the pattern is made. This means consists of a lever, H, which is fulcrumed at h to the cylinder-frame, and which has connected with it a pawl or hook, h". This pawl or hook is connected to a spring, If, to hold its hooked end in engagement with the end portion of the cylinder, and the lever H, by a spring, If, is drawn up normally into the position shown in Fig. 3. The lever H is connected by a rod, 717', with the pawl or hook j, and is to have a cord or connection attached to its outer end, it. By pulling downward on the cord or connection attached to the end It" of the lever H the attendant will bring the pawl or hook If to act upon the cylinder, and may thereby turnit backward, the rod 7r serving at the same time to lift the pawl or hookj entirely out of engagementwith the cylinder.

hat we claim as our invention, and desire to secure by Letters Patent, is-

1. The combination, with the hooked liftingwires and hook-levers, the needles, the swinging cylinder-frame and cylinder, and mechanism, substantially as described, for operating said levers, the cylinder-frame, and cylinder, of a main frame consisting of end standards and upper and lower girts connecting them, all cast in one integral structure, the lower girt being formed with a single opening of a size to receive all'the lifting-wires, and the up per girt being formed with an opening large enough to receive the needles, and guidingplates, one for the liftingwires and the other for the needles, made separate from and so cured to said girts opposite the openings in them, substantially as herein set forth.

2. The combination, with the hooked liftingwires, the levers, the needles, the swinging cylinder-frame and cylinder, and mechanism, substantially described, for operating the levers, the cylinder-frame, and cylinder, of a main frame comprising end standards and upper and lower girts connecting them,all cast in oneintegral structure, said girts being pro vided with openings to receive the wires and needles, a plate secured to the lower girt opposite the opening therein and forming the lower guide for the wires, a bracket projecting from the upper girt and forming the upper guide for the wires, and plates secured to the upper girt and bracket and forming the needleguides, substantially as herein set forth.

8. The combination, with the hooked liftingwires, the needles, and the swinging cylinderframe and cylinder, of a main frame provided with projecting arms having the taper studs airigidly projecting from their sides, hooklevers provided at their ends with taper holes or sockets fitting directly upon said taper studs, means, as screws 1)", for securing the hook-levers upon the studs, and by which the taper holes or sockets of the levers may be brought to a proper bearing on the taper-studs, and mechanism, substantially as described, for operating the levers, the cylinder-frame, and cylinder, substantially as herein set forth.

4. The combination, with the hooked lifting wires, the levers and needles, the swinging cylinder-frame composed of upright arms and a girt or stretcher rigidly connecting them, a cylinder, and mechanism, substantially as described, for operating the lovers, the cylinder frame, and cylinder, of a main frame and a horizontal shaft supported in the main frame, and upon which the upright arms of the cylinder-frame are fulcrumed, and means, substantially as described, whereby the horizontal shaft may be adj ustably secured in different positions lengthwise in the main frame, and whereby the cylinder-frame may be adjustabl y secured in different positions lengthwise of said shaft, substantially as herein set forth.

5. The combination, with the hooked liftingwires, the levers and needles, the swinging cylinder-frame and the cylinder having upon onejournal a head or flange, and mechanism, substantially as described, for operating the lovers, the cylinder-frame, and cylinder, of a lever fulcrumed at one side of the cylinderframe and engaging at the upper end with the said head or flange on the eylinder-journal, and a shaft provided with a cam, with which the opposite end of the cylinder-shifting lever engages, and whereby the cylinder may be shifted lengthwise in its frame, substantially as herein set forth.

(S. The combination, with the hooked liftingwires, the lovers and needles, the swinging cylinder'frame and its cylinder having on one of its journals a head or flange, and mechanism, substantially as described, for operating the levers, the cylinder-frame, and cylinder, of a tubular shaft on which the cylinder-frame is journaled, a lever fulcrumed on said frame and engaging at the upper end with a head or flange 011 the cylinderjournal, and a shaft arranged within said tubular shaft, and having upon it a cam engaging with the lower end of the eyl inder shifting lever, substantially as herein set fort 1.

JOHN E. ATVOOD. EUGENE AT\VOOD. EDWARD E. BRADLEY Witnesses:

Jos. F. J osnrn, Var. A. GILBERT. 

